Thomas h



T. H. BURNETT.

INTERNAL comsusnow ENGINE.

APPLICATION FILED SEPT. 24. I9I8.

1,308,621, Patented July 1, 1919.

. mygnrm W q IIIIIIIIIIIIIIA IN VEN TOR.

I zomwflfiuzywii ,Q Ps MM A TTORNEY THOMAS H. BURNETT, 01E EXCI-IEQUER,CALIFORNIA.

' INTERNAL-COMBUSTION ENGINE.

p all whom 225' may concern:

Be it known that I, Trroaras H. BURNETT, a citizen ofthe Unite States,residing at Exchequer, in the county of Mariposa, State part of this "ofCalifornia, have invented certain. new and useful Improvements inInternal-Combustion Engines and I do declare the following to be a full,clear, and exact description of the same, reference ibeing had to theaccompanying drawings, and to the characters of reference markedthereon, which form a application.

This'invention relates to improvements in engines and particularly tothat type known as internal combustion engines. The object .ofthe'invention isflto produce an engine which will have a greatlyincreased power over the present type of engine and at "the same timeone in which the vibration due to the explosion will be greatlylessened.

In the now commonly used form of internal "combustion engines, thereciprocating pistons are movable in fixed or stationary cylinders. Theexplosion of the fuel of course causes a concussion in all directions.The piston being the only movable part is driven by thisconcussion butthe fixed stationarycylinder receives all the jar of the vibration, buthas no movement. Hence, the force of the explosion against the sides ofthe cylinder walls is lost and it tends to cause an excessive vibrationand heat. In my improved type of engine, I provide reciprocatingcylinder walls moving in the reverse direction to the piston, suchmovable cylinder walls having connecting rods connecting them with thecrank shaft. The

' forces of the explosion of the fuel within the engine then drivesagainst the two movable arts and forces one in one d1rect1on and theother in the opposite direction. This utilizes the full force of theexplosion and at the same time causes the two movable parts to becushioned with respect toveach other to such an extent as to almosteliminate the vibration and to lessen the heat.

A further object of the invention is to produce a simple and inexpensivedevice and. yet one which will be exceed1ngly efi'ective for thepurposes for which it is designed.

These objects, I accomplish by means of such structure and relativearrangement of the parts as will fully appear by a perusal of thefollowing specification and claims.

In .the drawings, similar characters of ref- Specification of LettersPatent.

Patented July 1, 1919.-

v Application filed September 24, 1918. Serial No. 255,451.

.- projecting flangesi) mova ble in the slots 3.

Connecting rods 6 connect the end of the cylinder 5 with the crank shaft7. The piston 8 is movable within the cylinder 4 and is provided with aconnecting rod 9 connecting such piston with the crank shaft. 7. Whenthe explosion takes place within the cylinder 4, the force of suchexplosion drives such cylinder in one direction and the piston in theopposite direction. Thus, the full force of the explosion is utilized byreason of the connections with the crank shaft. Also, the cylinder andpiston are cushioned one against the other in such a manner as topractically limit all vibration. The cylinder 4: is provided with avalve inlet pipe 10 which is provided with a slip joint as at 11, toallow the reciprocating motion of the said cylinder. The inlet pipe 10is connected with any suitable form of fuel supply and is provided witha spring inlet valve 12 which opens with the suction within the cylinderand closes when the compression takes place.

The engine is ofcourse provided with suitable ignition means to cause anignitii'ig spark in the plug 13, and is provided with an upwardlyopening exhaust puppet-valve 14: seated in the head end of the cylinder'4- which is provided with an .exhaust port to be turned by any suitablemeans, not

shown, such as will give the cam one revolution to every two revolutionsof the crank shaft, as is common practice on four cycle gas engines. Thecam 21 is of course so positioned that the valve 1 3% will he lifted atthe correct point iii-the engine'cycles, While I have shown here asingle oylinder engine, the same construction may he used with anynumber of cylinders. In the same way, the intake valve may be operatedmechanically instead of being of the auto matic type. 7

Thus, from the foregoing description, it Will readily be seen that Ihave produced such device as substan'ially fulfils the oh jects of theinvention as set forth herein.

l/Vhile-this specification sets forth in detail the present andpreferred construction of the device, still in practice, such deviationsfrom such detail may be resorted to as do not form a departure from thespirit of the invention, as defined by the appended claims.

- Having thus described my invention, What I claim as new and useful anddesire to sesecure by Letters Patent is r- 1.; An internal combustionengine comprising a base, a cylinder slidably mounted cylinder, wherebythe valve is opened at a,

predetermined point. p

52', An internal combustion engine comprising a base, a cylinderslidahly mounted therein, a piston in the cylinder, a crank shaft, thecylinder and piston being operatively connected therewith to move inrelatively opposite directions, a spring seated puppet valve adapted tomove upwardly positioned vertically in the underside of the cylinderahead of the piston, a roller on the end or the stem of the valve, alever arm pivotally mounted to the base and Whose upper surface isadjacent the roller, means whereby the lever arm is normally presseddownward, and a cam. under the lever arm frictionally engaged therewithwhereby the lever arm and valve are raised at a predetern'iined point.

In testimony whereof I afiix my signature. 56'

THOMAS H. BURNETT.

